x = int(input())
j = 8
for low in range(400, 2000, 200):
  if low <= x < low + 200:
    print(j)
    break
  j -= 1 x = int(input()) x int(input()) int input() input j = 8 j 8 for low in range(400, 2000, 200):
  if low <= x < low + 200:
    print(j)
    break
  j -= 1 low range(400, 2000, 200) range 400 2000 200 if low <= x < low + 200:
    print(j)
    break
   low <= x < low + 200 low <= x low x low + 200 low 200 print(j) print j break j -= 1 j 1 j -= 1 1 j j = 8 8 j x = int(input()) int(input()) x
x = int(input())
j = 8
for low in range(400, 2000, 200):
  if low <= x < low + 200:
    print(j)
    break
  j -= 1